Threshold.



E. KRAUSE.

THRESHOLD.

APPLICATION man SEPT. 4. 1915.

Patented Apr. 11, 1916.

THE COLUMBIA PLANOGRAPN CO" WASHINGTON, D- C.

ERNEST KBAUSE, OF EL PASO,

THRESHOLD.

Specification of Letters Patent.

Application filed September 4, 1915. Serial No. 49,073.

To all whom it may concern;

Be it known that I, ERNEST KRAUSE, a citizen of the'United States,residing at El Paso, in the county of El Paso and State of Texas, haveinvented certain new and useful Improvements in Thresholds; and I doherebydeclare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

' with the bottom of the door, and will prevent the entrance of dust,wind, rain or snow. 7

The invention is also especially intended toprovidea threshold whichwill be cheap and simple in construction and may be readily adjusted toany particular door.

lVith these and other objects in view the invention consists in thenovel details of construction and in the combination and ar rangement ofpartswhich will be hereinafter described and claimed.

Reference is had to the accompanying drawings, in which similar partsare indicated by similar reference symbols throughout the several views,and in which Figure 1 1s a perspectlvel view of the threshold, the doorbeing indicated 1n. dotted lines; Fig. :2 is a plan view of the deviceshown in Fig. 1, parts being broken away; and Fig. 8 shows a sectionalong the line 33 of Fig. 2 and looking in the direction of the arrows,the parts being on a larger scale than in the other figures.

A. represents the bottom of the door,"B the flooring and C the thresholdwhich consists primarily of a plate of resilient metal, such as steel,brass, or the like, arched as at 1, and having laterally-projectingflanges 2 and 3, each flange being provided with a slot 4, and each slothaving a series of indentations 5 adapted to engage the clamp screws 6and 6 The flange 3 is bent under, as shown at 7 in Fig. 3, andterminates in a vertical rib 8, through which pass the screw bolts 9engaging the nuts 10. The heads 11 of these screw bolts are shouldered,and engage the shoulders 12 formed in the body of r the plate 1, asshown most clearly in Fig. 3.

In order to mount the threshold, it is placed in the doorway insubstantially the My present invention relates to improvemay be.

Patente'd Ape-11, ieie.

position shown in Fig. 3, and the clamp screws 6 aresecured in place,then the screw bolts 9 areturned until the arch 1 of the threshold platefits snugly against the'bottom of the door, and then the screws S arescrewed home, and the device is ready for use.

The resiliency of the threshold plate will enable the central portion 1to be arched more or less by simply turning up or easing down the screwbolts 9, causing the arched portion 1 to be raised or lowered as thecase By'having the slots 4L provided, with a series of notches 5, asshown, the .clamp screws 6 and 6 may be readily inserted so as to avoidscams orknots. in the flooring or thelikeg Thus it will be seen that Iprovide an adjustable threshold made'of substantially a singleresilientplate-of metal, which maybe readily placed in position and readily adjusted to fit the bottom of the door, and the resiliency ofthemetal will always form a tight oint while the door is closed.

Whilethe device is especially applicable for use as a thresholdwithdoors, it will be obvious that it may also be used in place ofekweather strip for windows, gates, or the It is obvious that thoseskilled in the art may vary the construction and arrangement of partswithout departing from the spirit of my invention, and therefore I donot.

wish to beilimited to such features except as set out in the claims. I

' Having thus described my invention what I claim and desire to secureby Letters Patent of the United States is 1. threshold comprising asingle plate of resllient metal having an arched central portion andlaterally-projecting flanges, said portion and laterally-projectingflanges, said flanges beingprovided with elongated slots with lateralnotches in said slots, and one of said flanges being bent inward andtern1inating in an upwardly-projecting rib with screw bolts projectingfrom the opposite side of the arch, and passing through said up:wardly-projecting rib, and nuts bearing against said rib and engagingsaid screw bolts, the arched portion of said plate being provided withshoulders to engage the heads of said screw bolts, substantially asdescribed.

3- A t r sh l c mpr sin a single p at 9 resilient e l a in an ar hecentra per i a d l a y-Pr cting fla ge s d flan es bein pr ded ith elongted sl ts with sc ews nga ing in s d s o s, and w Of S id fla sii g' nin rd, and terminating in an upwardly-projecting rib with Screw bolts prje t g fr m he oppo de of th ar h, andr sing th ough aid p ardly-Pr je tng rib, and ut beari against Said r b a eng n said screw elt s ant ly asde cri ed- 4. A thresholdcomprising a single plate Of r l en metal h i gan rched. e n w port o andateral y-p j ct ng flang said fl es b i p o ith el ga 'e slots, h SQFQWS enga in n said slo s, and on of said flan eseing bent inward and te mia in i a p y p ie ting rib w th screw boltsprojecting from the opposite side of the arch, and passing through saidof said flanges ei g nt in ar an te -1 1 V at ng in up dly-1 iee ilg r bi screw bolts projecting from the opposite side of the arch, and passingthrough upwardlysprojecting rib, and nuts bearing aga st a d b a ngagings sc e bolts, the arched portion of said plate being provided withrecessed portions having subte t a v r c sh e s to e gage h heads ofsaid screw bolts, substantially as de c bed In testimony whereof, IaffiX my signature.

ERNEST KRAUSE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

